Codemash CTF 2019 - Capture the Falg

Jan 11, 2019

Clue

This falg is easy to catch, isn’t it?

criSdmetio1AUdW9dP3n----

Hint

fa
lg

Approach

Based on the characters in the text, this appears to be some sort of transposition cipher. I loaded up my favorite cipher tool site and eventually landed on the caesar-box-cipher. Running it through will all possible sizes yields one of the strings being our flag: